CA2254468A1 - Variable wavelength laser light source - Google Patents

Variable wavelength laser light source

Info

Publication number
CA2254468A1
CA2254468A1 CA002254468A CA2254468A CA2254468A1 CA 2254468 A1 CA2254468 A1 CA 2254468A1 CA 002254468 A CA002254468 A CA 002254468A CA 2254468 A CA2254468 A CA 2254468A CA 2254468 A1 CA2254468 A1 CA 2254468A1
Authority
CA
Canada
Prior art keywords
optical
reflecting means
laser light
light source
variable wavelength
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002254468A
Other languages
French (fr)
Other versions
CA2254468C (en
Inventor
Seiji Funakawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ando Electric Co Ltd
Original Assignee
Ando Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ando Electric Co Ltd filed Critical Ando Electric Co Ltd
Publication of CA2254468A1 publication Critical patent/CA2254468A1/en
Application granted granted Critical
Publication of CA2254468C publication Critical patent/CA2254468C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/14—External cavity lasers
    • H01S5/141—External cavity lasers using a wavelength selective device, e.g. a grating or etalon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/08—Construction or shape of optical resonators or components thereof
    • H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
    • H01S3/0811—Construction or shape of optical resonators or components thereof comprising three or more reflectors incorporating a dispersive element, e.g. a prism for wavelength selection
    • H01S3/0812—Construction or shape of optical resonators or components thereof comprising three or more reflectors incorporating a dispersive element, e.g. a prism for wavelength selection using a diffraction grating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/105—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
    • H01S3/1055—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length one of the reflectors being constituted by a diffraction grating

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Lasers (AREA)
  • Semiconductor Lasers (AREA)

Abstract

A variable wavelength laser light source is disclosed which can improve the resolution of the outgoing light and output only pure laser light without the natural emitted light. A variable wavelength laser light source of the invention comprises an optical amplification element 11, first optical reflecting means 12 which is set at the end surface 11a of the optical amplification element 11, wavelength selection element 13 which is set at the end surface 11b of the optical amplification element 11 and selects and outputs the desired wavelength light emitted by the optical amplification element 11, second optical reflecting means 14 reflecting the outgoing light from the wavelength selection element 13 and constitutes the resonator along with the first optical reflecting means 12, first rotating mechanism 15 which rotates the second optical reflecting means 14 around its axis, and second rotating mechanism 16 which rotates the second optical reflecting means 14 around the second axis 16a set outer of the second optical reflecting means 14.
CA002254468A 1997-11-28 1998-11-25 Variable wavelength laser light source Expired - Fee Related CA2254468C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9329344A JPH11163450A (en) 1997-11-28 1997-11-28 Wavelength variable light source
JP9-329344 1997-11-28

Publications (2)

Publication Number Publication Date
CA2254468A1 true CA2254468A1 (en) 1999-05-28
CA2254468C CA2254468C (en) 2002-01-15

Family

ID=18220412

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002254468A Expired - Fee Related CA2254468C (en) 1997-11-28 1998-11-25 Variable wavelength laser light source

Country Status (4)

Country Link
US (1) US6047008A (en)
EP (1) EP0920094A1 (en)
JP (1) JPH11163450A (en)
CA (1) CA2254468C (en)

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* Cited by examiner, † Cited by third party
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FR2775390B1 (en) * 1998-02-20 2000-05-05 Photonetics CONTINUOUSLY TUNABLE WAVELENGTH SINGLE-MODE LASER SOURCE
US6625183B1 (en) * 2000-01-31 2003-09-23 New Focus, Inc. External cavity laser apparatus
AU2001271243A1 (en) * 2000-03-23 2001-10-03 New Focus, Inc. Continuously grating-tuned external cavity laser
JP2001284715A (en) 2000-03-30 2001-10-12 Ando Electric Co Ltd External resonator type laser light source
US7739577B2 (en) * 2004-06-03 2010-06-15 Inphase Technologies Data protection system
US20050270856A1 (en) * 2004-06-03 2005-12-08 Inphase Technologies, Inc. Multi-level format for information storage
US8071260B1 (en) * 2004-06-15 2011-12-06 Inphase Technologies, Inc. Thermoplastic holographic media
US7704643B2 (en) * 2005-02-28 2010-04-27 Inphase Technologies, Inc. Holographic recording medium with control of photopolymerization and dark reactions
US7623279B1 (en) 2005-11-22 2009-11-24 Inphase Technologies, Inc. Method for holographic data retrieval by quadrature homodyne detection
US7548358B2 (en) * 2005-05-26 2009-06-16 Inphase Technologies, Inc. Phase conjugate reconstruction of a hologram
US20060280096A1 (en) * 2005-05-26 2006-12-14 Inphase Technologies, Inc. Erasing holographic media
US7480085B2 (en) * 2005-05-26 2009-01-20 Inphase Technologies, Inc. Operational mode performance of a holographic memory system
US20060281021A1 (en) * 2005-05-26 2006-12-14 Inphase Technologies, Inc. Illuminative treatment of holographic media
US20060279819A1 (en) * 2005-05-26 2006-12-14 Inphase Technologies, Inc. Laser mode stabilization using an etalon
US7742211B2 (en) * 2005-05-26 2010-06-22 Inphase Technologies, Inc. Sensing and correcting angular orientation of holographic media in a holographic memory system by partial reflection, the system including a galvano mirror
US7675025B2 (en) * 2005-05-26 2010-03-09 Inphase Technologies, Inc. Sensing absolute position of an encoded object
US20060291022A1 (en) * 2005-05-26 2006-12-28 Inphase Technologies, Inc. Optical delay line in holographic drive
US7633662B2 (en) 2005-05-26 2009-12-15 Inphase Technologies, Inc. Holographic drive head alignments
US8305700B2 (en) * 2005-05-26 2012-11-06 Inphase Technologies, Inc. Holographic drive head and component alignment
US7813017B2 (en) * 2005-10-21 2010-10-12 Inphase Technologies, Inc. Method and system for increasing holographic data storage capacity using irradiance-tailoring element
US7739701B1 (en) 2005-11-22 2010-06-15 Inphase Technologies, Inc. Data storage cartridge loading and unloading mechanism, drive door mechanism and data drive
US7773276B2 (en) * 2006-03-07 2010-08-10 Inphase Technologies, Inc. Method for determining media orientation and required temperature compensation in page-based holographic data storage systems using data page Bragg detuning measurements
WO2007103569A2 (en) * 2006-03-09 2007-09-13 Inphase Technologies, Inc. External cavity laser
US20070242589A1 (en) * 2006-04-13 2007-10-18 Inphase Technologies, Inc. Stabilizing holographic disk medium against vibrations and/or controlling deflection of disk medium
US20070248890A1 (en) * 2006-04-20 2007-10-25 Inphase Technologies, Inc. Index Contrasting-Photoactive Polymerizable Materials, and Articles and Methods Using Same
US8120832B2 (en) 2006-05-23 2012-02-21 Inphase Technologies, Inc. High speed electromechanical shutter
US8079040B2 (en) 2006-06-06 2011-12-13 Inphase Technologies, Inc. Loading and unloading mechanism for data storage cartridge and data drive
US7495838B2 (en) 2006-07-19 2009-02-24 Inphase Technologies, Inc. Collimation lens group adjustment for laser system
US20080059144A1 (en) * 2006-09-01 2008-03-06 Inphase Technologies Emulation of dissimilar removable medium storage device types assisted by information embedded in the logical format
US20090103416A1 (en) * 2007-10-17 2009-04-23 Inphase Technologies, Inc. Layout method for multiplexed holograms

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603690A (en) * 1969-10-22 1971-09-07 Nasa Optical systems having spatially invariant outputs
US4229710A (en) * 1977-10-21 1980-10-21 Itamar Shoshan Wavelength selector for tunable laser
JPH04262588A (en) * 1991-02-18 1992-09-17 Toshiba Corp Laser and laser exposure device
JP3461848B2 (en) * 1992-03-23 2003-10-27 株式会社東芝 Tunable laser device
FR2690012B1 (en) * 1992-04-13 1994-07-08 France Telecom METHOD FOR ADJUSTING A CONTINUOUSLY TUNABLE LIGHT SOURCE.
JPH0799359A (en) * 1993-09-27 1995-04-11 Ando Electric Co Ltd Light source for external resonator type frequency tunable semiconductor laser
JPH07240558A (en) * 1994-02-28 1995-09-12 Ando Electric Co Ltd Light source of tunable semiconductor laser
FR2724496B1 (en) * 1994-09-13 1996-12-20 Photonetics SINGLE-MODE LASER SOURCE TUNABLE IN WAVELENGTH WITH SELF-ALIGNED EXTERNAL CAVITY
DE19515321A1 (en) * 1995-04-20 1996-10-24 Gos Ges Zur Foerderung Angewan Tunable, adjustable stable laser light source with spectrally filtered output
JPH09260753A (en) * 1996-03-25 1997-10-03 Ando Electric Co Ltd External resonator-type variable wavelength light source
JP3218999B2 (en) * 1996-12-18 2001-10-15 安藤電気株式会社 External cavity type tunable semiconductor laser light source

Also Published As

Publication number Publication date
JPH11163450A (en) 1999-06-18
EP0920094A1 (en) 1999-06-02
US6047008A (en) 2000-04-04
CA2254468C (en) 2002-01-15

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